package com.lagou.dao.lmpl;

import com.lagou.dao.CourseDao;
import com.lagou.pojo.Course;
import com.lagou.untis.DruidUtils;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

public class CourseDaoImpl implements CourseDao {


    @Override
    public List<Course> findCourseList() {
        try {
            QueryRunner qr = new QueryRunner(DruidUtils.getDataSource());
            String sql = "select id,course_name,price,sort_num,STATUS from course where is_del = ?";
            List<Course> query = qr.query(sql, new BeanListHandler<Course>(Course.class), 0);
            return query;
        } catch (SQLException e) {
            e.printStackTrace();
            return null;
        }


    }


    @Override
    public List<Course> findCourseNameAndStatus(String course_name, String status) {
        try {
            QueryRunner qr = new QueryRunner(DruidUtils.getDataSource());


            StringBuffer sb = new StringBuffer("select id,course_name,price,sort_num,STATUS from course where is_del = ? ");
            List<Object> list = new ArrayList<>();

            list.add(0);

            if (course_name != null) {
                course_name = "%" + course_name + "%";
                sb.append("and course_name like  ?");
                list.add(course_name);


            } else if (status != null) {
                sb.append("and status = ?");
                int i = Integer.parseInt(status);
                list.add(i);
            }

            List<Course> result = qr.query(sb.toString(), new BeanListHandler<Course>(Course.class), list.toArray());
            return result;
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    public int saveCourseSalesInfo(Course course) {

        try {
            //1.创建QueryRunner
            QueryRunner qr = new QueryRunner(DruidUtils.getDataSource());

            //2.编写SQL
            String sql = "INSERT INTO course(\n" +
                    "course_name,\n" +
                    "brief,\n" +
                    "teacher_name,\n" +
                    "teacher_info,\n" +
                    "preview_first_field,\n" +
                    "preview_second_field,\n" +
                    "discounts,\n" +
                    "price,\n" +
                    "price_tag,\n" +
                    "share_image_title,\n" +
                    "share_title,\n" +
                    "share_description,\n" +
                    "course_description,\n" +
                    "course_img_url,\n" +
                    "STATUS,\n" +
                    "create_time,\n" +
                    "update_time\n" +
                    ")VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?);";

            Object[] param = {course.getCourse_name(),course.getBrief(),course.getTeacher_name(),course.getTeacher_info(),
                    course.getPreview_first_field(),course.getPreview_second_field(),course.getDiscounts(),course.getPrice(),
                    course.getPrice_tag(),course.getShare_image_title(),course.getShare_title(),course.getShare_description(),
                    course.getCourse_description(),course.getCourse_img_url(),course.getStatus(),course.getCreate_time(),course.getUpdate_time()};

            //4.执行插入操作
            int row = qr.update(sql, param);

            return row;
        } catch (SQLException e) {
            e.printStackTrace();
            return 0;
        }
    }




}
